(912 - 54950 : y) + 483 = 610

912-54950/у=610-483=127-54950/у =127-912= -78554950/у=785у=54950/785у=70

(912-54950:y)+483=610912-54950:y=610-483912-54950:y=12754950:y=912-12754950:y=785y=54950:785y=70______________________(912-54950:y)+483=610610=610